Vertical boiler.



PATENTED JAN.` 16, 1906.

No. 810,002.l

` n T, SUZUKI.

v-BRTIGAL BOILER.

APPLICATION FILED MAY 17, 1905.

3 SHBETS-SHEET l.

fave/zio?" fr'z@ am @Qua/KQ' No. 810,002. PATENTBD JAN. 10,1906.

T.sUzUK1.

VERTICALy BOILER.

APPLIqATIoN FILED M1117, 1905.

3 SHEETS-SHEET 01o 1 o oo o o o o O O 3 SH'BBTS--SHBBT 3.

PATENTBD JAN. 16, 1906.

T. SUZUKI.

VERTICAL BOILER.

APPLIoATIoN FILED MAY 17. 1905.

UNITED STATES PATENT OFFIOE.

VERTICAL BOILER.

Specification of Letters Patent.

Patented Jan. 16, 1906.

Application filed May 17. 1905. Serial No. 260.781.

To all whom, it vvv/ty concern.-

Be it known that I, TozABURo SUZUKI, a subject of the Emperor of Japan, residing at No. 401 Jibeishmden, Sunamura, in the county of Minami-Katsushika, in the Province of Tokyo, J a an, have invented certain new and useful mprovements in Vertical Boilers, of which the following is a specification.

My invention relates to vertical boilers.

My invention comprises generally a vertical boiler which is divided into a lower waterchamber, an upper evaporating chamber, and an intermediate combustion-chamber, the latter having inlet and outlet openings arranged to cause the products of combustion to travel in a horizontal plane from the inlet to the outlet. n

My invention also comprises an improved feed-water-heater intake, whereby the feedwater is heated after its admission to the boiler without being brought directly in contact and reducing the temperature of the water adjacent the heating-surface and steamspace.

Heretofore vertical boilers have been provided with a lower wall constituting the principal heating area against which the products of combustion are directed, the furnace being located below the boiler. One of the great defects of this form is that incrustation, scale, and dregs descend and collect on the heating -surface, preventing contact of the water therewith and reducing the eficiency of the boiler. This defect is very troublesome where the water used contains a large percentage of foreign matter. In my improved boiler by placing the llame-engaging or water-heating surfaces above the bottom wall and causing the products of combustion to travel in a horizontal plane I avoid the necessity of frequent cleaning and can use the boiler for a great length of time without decreasing its efficiency. I am also able to use any kind of water convenient, regardless of its condition, as the scale and dregs are never in contact with the heating-surface.

By the provision and general arrangement of the feed-water intake I am enabled to partially heat the water whenA the same is introduced into the boiler, and I avoid bringing it into contact with and reducing the temperature of the water nearest adjacent the heat ing-surfaces and steam-space.

My invention will be more fully described in connection with the accompanying draw- ,through the combustion-chamber.

ings and will be more particularly pointed out in the appended claims.

In the drawings, Figure 1 is a vertical sectional view of a boiler embodying the main features of my invention. Fig. 2 is a horizontal sectional view of the same on line 2 2 of Fig. 1. Fig. 8 is a similar sectional vieW showing a modified form of construction. Fig. 4 is a horizontal sectional view of a structure including three distinct boilers ofA the form shown in Fig. 1 connected in a manner to utilize the products of combustion of a single furnace.

Iiike characters of reference designate similar parts throughout the different figures of the drawings.

Referring to Figs. 1 and 2, my invention as shown is embodied in a unitary 'structure divided into an upper evaporating-chamber A, a lower water-chamber B, and an intermediate combustion-chamber C. The said boiler is desirably formed of boiler-plate, the upper chamber A comprising a top wall 1, secured to a cylindrical wall 8. The lower wall of the chamber is formed by a diaphragm or partition 2, which is secured at its peripheral margins to the wall 3. The lower or water chamber B is provided with a concave bottom wall 4 and a cylindric wall 6, the top wall of said chamber being formed by a diaphragm or partition 5. The chamber B of the boiler is Lsunk within and surrounded by a closed wall D, composed of a suitable material, such as fire-clay, having heat-retaining properties and which is provided with air-spaces D. Said Wall D incases the combustionchamber C and extends a slight distance above the same, where juncture is effected with the cylindric wall 3. Near the upper end of said wall D and at opposite points the same is provided With an inlet and an outlet 7 and 8, respectively, whereby the products of combustion are conveyed and delivered for passage The said structure is supported in place upon standards d, resting upon foundation parts d. The combustion-chamber C is provided with a plurality of vertically disposed tubes 9, eX- tending between the partition-walls 2 and 5 and connecting said chambers A and B. Said tubes are spaced apart and generally distributed throughout the chamber in a manner to be engaged and played upon by the products of combustion in their passage through the chamber C. I provide, as shown, an improved means for admitting the feed-water,

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which desirably consists of the following parts. Near the center of the combustion-chamber I provide a relatively enlarged feed-water tube 10, which extends, like the tubes 9, from the lower wall to the upper Wall 2. It will be seen that said tube is located in a position to be acted von effectively by the products of combustion, as it is directly in the path of travel of the latter. I desirably provide a tube 1.1, which is located within the tube and which is of slightly less diameter than the same, the said tube 11 being out of contact throughout its length with the tube 10 and chamber C and extending slightly beyond the same above and below. Said tube is desirably supported in place by inclined rods 12. The upper end of said tube 11 is provided with an annular flange 13,which slightly overhangs the tube 1.0 and is centrally apertured. `Water 1s introduced to the boiler by means of a feedpipe 14, which enters the chamber A through the side wall 3 and extends to a central position in said chamber, where it is preferably bent at right angles and is projected downwardly into the tube 11. The said feed-water pipe may be controlled. in any suitable manner and connected with a convenient source of supply. A blow-off pipe 15, controlled by a suitable valve, is connected to lthe lower Wall 4 of the chamber B, as shown in Fig. 1.I rlhe water level is preferably maintained at a point above the overhanging flange 13.

It will be noted by reference to Fig. 2 that as the tubes 9 are of relatively reduced diameter with respect to the tube 11 the water in said tubes 9 will be more quickly heated and will also be heated to a higher temperature than the Water in the tube 11, the result being that the water in the tubes 9 will rise more quickly than in the tube 11. It will be further obvious that the water above the diaphragm 2 will be of a relatively lower temperature than that in the tubes 9 and Will be displaced thereby and forced downwardly through the tube 11 to the chamber B, this circulation being continuous throughout the operation of the boiler. The water passing downwardly is prevented to a great extent from entering the tube 10 by reason of the overhanging fiange 13. This results in the water in the tube 10 having little or no circulation, and thereby attaining a very high temperature, the heat units being effectively transmitted to the tube 11. It will thus be seen that the tube 10 thereby acts as an effective feed-water heater. As water is admitted through the feed-pipe 14 it is directed downwardly through the tube 11 and is subjected to the relatively high temperature of the water in said tube 10 before it reaches the chamber B. The feed-wateris admitted directly to the boiler and is immediately acted upon by the feed-water heater, so that the temperature of the contents of the boiler aol-l jacent the steam-space and near the heatingtube' 9 is not reduced. A This is a very great advantage, inasmuch as it entirely avoids the necessity of heating the water before the same is admitted to the boiler.

Next, referring to Fig. 3, it will be noted that in the form therein shown deflecting-partitions 16 and 17 are provided, which cause the flames or products of combustionto travel in a more circuitous path than in the form shown inFigs. 1 and 2. Said defiectingpartitions desirably extend throughout the height of the'chamber C and project in opposite directions and toward the center of said chamber. In the form shown one of said walls 16 desirably extends to the circulatingtube 10, the latter being located at a point slightly at one side of the center of the chamber C. The remaining partition 17 desirably extends somewhat beyond the tube 10 and so enlarges and extends the path of the products of combustion that the same travel throughout and play upon substantially all of the tubes 9. In the form shown in Fig. 3 the parts which are similar to the form shown in Figs. 1 and 2 are designated by similar characters of reference, the structure differing from that shown in Fig. 2 only as hereinbefore described.

While in the constructions hereinbefore described I have shown a single boiler which is designed to be connected with a furnace and to deliver the products of combustion direct to the chimney, it will be understood that the device of my invention is not conned to this particular use and that the same may be and in some cases will desirably be 'constructed so that two or more boilers will be connected to utilize the products of combustion of a single furnace. In Fig. 4 is shown a horizontal sectional view through the combustion-chambers of three connected boilers 18, 19, and 20, wherein the outer walls D are joined in a manner to form a main inlet-passage E, through which the furnace delivers to boilers 18 and 19, and a connecting-passage F conveying the products of combustion delivered from the two alined boilers, as shown, to the third boiler 20, said products being transmitted therefrom through a passage G direct to the chimney. I desirably provide a diaphragm I-I, which is arranged to deflect the products of combustion laterally and rearwardly to the' oppositelydisposed alined boilers in a manner to cause the greatest possible length of travel. A

While I have herein shown and described specific embodiments of my invention, it will be understood that I do not wish to be limited to the precise constructions shown, as changes may be readily made therefrom with out departingfrom the spirit of the invention.

Thereforewhat I claim, and desire to secure by Letters Patent, is

1. A vertical boiler comprising a unitary IUO IIO

structure provided with horizontal partitionwalls forming a lower water-chamber, an upper evaporating-chamber, and an intermediate combustion-chamber, said combustionchamber having an inlet and an outlet for the passage of products of combustion, a plurality of tubes located in the path of travel of said products of combustion and connecting said water and evaporating chambers, a circulating-tube centrally disposed within said combustion-chamber, a feed-water tube located within said circulating-tube and eX- tending throughout the length thereof, said feed-water tube having on its upper end a flange overhanging said circulating-tube, and a feed-water pipe projecting downwardly within said feed-water tube.

2. In a vertical boiler the combination of a lower water-chamber, an upper evaporating-chamber, an intermediate combustionchamber closed to said water and evaporating chambers, a plurality of tubes in said combustion-chamber connecting said water and evaporating chambers, a relatively enlarged circulating-tube for said combustionchamber, a pair of deiecting-partitions eX- tending on opposite sides of said inlet and outlet toward each other in said combustionchamber, one of said partitions engaging said tube, the remaining partition being spaced apart permitting the products of combustion to travel in a circuitous path from said inlet to said outlet.

3. A feed-water heat-er for boilers of the class described comprising an outer watertube, an inner tube inclosed by and separated from said outer tube, a feed-water pipe projecting downwardly in said inner tube, the latter having a lange overhanging the said outer tube.

4. In a vertical boiler the combination of a lower water-chamber, an upper evaporating-chamber, an intermediate combustionchamber having horizontally-disposed ingress and egress passages causing the products of combustion to travel in a horizontal path from said ingress to egress passages.

causing vthe products of combustion to travel in a horizontal path from said ingress to egress passages.

7. In a vertical boiler the combination of a lower water-chamber, an upper evaporating-chamber, a plurality of tubes connecting said water and evaporating chambers, an intermediate combustion-chamber having horizontally-disposed ingress and egress passages relatively restricted with respect to the combustion-chamber causing the products of `combustion to travel in a substantially horizontal path from said ingress to egress passages. Y

8. In a vertical boiler the combination of a lower water-chamber, an upper evaporating-chamber, an intermediate combustionchamber having an inlet and an outlet, a plurality of tubes connecting said water and evaporating chambers, dei'lecting-partitions extending from opposite sides of said outlet and inlet into said combustion-chamber, one of said partitions engaging a tube, the remaining partition being spaced apart causing the products of combustion to travel in a circuitous path from the inlet to the outlet.

In testimony whereof I affix my signature in presence of two witnesses.

TozABURo SUZUKI. Witnesses R. S. MILLER, UrrAcHr IsKoARAs. 

